[Greenbuilding] Opinions on electric tankless HW heaters?

[Nick Pyner]

Not quite.

60 is the safe, in some places legal, minimum thermostat setting. 72C is in
the disinfection range and, I understand, is the common booster setting for
solar water heaters. Indeed solar is sometimes promoted with this in mind.

In Australia, all new residential construction must have any hot water
storage systems at a minimum of 60, with tempering valves installed. The
same applies to replacement tanks I don't know where you are but I'm sure
most countries have similar codes covering this.

This is why I keep raising this matter but it doesn't seem to attract much
interest. The silence from that twice-a-week manual switching afficionado in
Oklahoma is deafening, but I think he could just possibly be facing a
problem that may become more apparent when he hears from his house-guest's
lawyer.

Some of the best information is from the Canadian Safety Council but my link
no longer works.
There is some stuff here

  http://www.treehugger.com/files/2009/03/turning-down-water-heater-safe.php


Nick Pyner

Dee Why   NSW

-----Original Message-----
From: greenbuilding-bounces at lists.bioenergylists.org
[mailto:greenbuilding-bounces at lists.bioenergylists.org]On Behalf Of Kat
Sent: Saturday, 23 April 2011 10:08 AM
To: Green Building
Subject: Re: [Greenbuilding] Opinions on electric tankless HW heaters?


72 C!  That seems like super-overkill.  Supposedly they die instantly at
60 C?

-Kat


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